4-Inch Lift Kit with M1 Shocks for Ford Super Duty 4WD (1999-2004)
- Fits 1999-2004 Ford F-250, F-250 Super Duty, and F-350 Super Duty 4WD: review the full fitment list
- Does not fit V-8 gas engine trucks, dually models, or trucks produced before 3-1-1999
- Trucks with a 2-piece rear driveshaft also need a carrier bearing drop bracket
- Kit contents: 4in front and rear leaf springs, two M1 monotube shock pairs, box kit, universal U-bolt kits
- Bolt-on install for added ground clearance and a leveled front-to-rear stance
- Downloadable installation guide available; shipping weight: 360.32 lb
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- V-8 gas engine models
- Dually models
- Models with a production date before 3-1-1999 A carrier bearing drop bracket is needed for trucks equipped with a 2-piece rear driveshaft
(#1197) Fitment on this page is based on the manufacturer’s application data.
About this kit
4-Inch Lift Kit with M1 Shocks, fitment-checked
Rough Country 50140 is a 4-inch lift kit for 1999-2004 Ford F-250 and F-350 Super Duty 4WD trucks, built around front and rear leaf springs, U-bolt hardware, and two pairs of M1 monotube shocks. It is not for V-8 gas engine trucks, dually axles, or trucks built before 3-1-1999.
This 4-inch lift kit for the 1999-2004 Ford F-250 and F-350 Super Duty 4WD covers XL, XLT, Lariat, King Ranch, and Harley-Davidson Edition trims listed in the fitment section. The box holds replacement 4in front and rear leaf springs, two M1 monotube shock pairs, a bracket box kit, and universal U-bolt hardware, so ride height comes from new springs rather than blocks. Check your engine, axle, and build date first: V-8 gas, dually, and pre-3-1-1999 trucks are excluded, and a 2-piece rear driveshaft calls for a carrier bearing drop bracket. A downloadable installation guide is available.
What’s in the box
Kit contents
- 1× Universal U-Bolt Kit 7617$39.95
- 1× Box Kit 7582
- 2× 4in Front Leaf Spring 8057
- 2× 4in Rear Leaf Spring 8066
- 1× M1 MONOTUBE SHOCK PAIR 770791P
- 1× M1 MONOTUBE SHOCK PAIR 770762P
- 1× Universal U-Bolt Kit 7650$39.95
Priced components are sold separately here, so a worn shock or arm can be replaced on its own later.
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 50140 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 50140 |
| UPC / GTIN | 00840269920509 |
| Lift height | 4 in |
| Shock package | M1 series |
| Shipping weight | 360.32 lb |
| Country of origin | CN |
| Category | Suspension & Lift Kits › Lift Kits |
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